Battery, battery pack and vehicle

Abstract

The utility model provides a battery, a battery pack and a vehicle. The battery comprises a shell, a first battery cell and a second battery cell, the shell comprises a first containing part and a second containing part, and a partition plate is arranged in the shell. The first containing part and the second containing part are arranged in a spaced mode in the first direction. The first accommodating part and the partition plate enclose to form a first accommodating cavity for accommodating the first battery cell, and the second accommodating part and the partition plate enclose to form a second accommodating cavity for accommodating the second battery cell. A first positive pole and a first negative pole are arranged on one side, deviating from the first accommodating cavity, of the first accommodating part. A second positive pole and a second negative pole are arranged on one side, deviating from the second accommodating cavity, of the second accommodating part. The first battery cell and the second battery cell can independently supply power to the outside, and when one battery cell is damaged, the other battery cell can continuously supply power, so that the power supply effect of the battery is improved.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a battery, a battery pack, and a vehicle. Background Technology

[0002] With the gradual development of vehicle technology, new energy vehicles are becoming increasingly popular. As the power component of new energy vehicles, the performance requirements for batteries in various aspects are gradually increasing. Currently, when a battery malfunctions, such as due to external impact or internal short circuit, the cells inside the battery will be damaged as a whole, causing the battery to be unable to continuously supply power and reducing its power supply efficiency. Utility Model Content

[0003] This application provides a battery, a battery pack, and a vehicle to solve related technical problems.

[0004] A first aspect of this application provides a battery, comprising: a casing, a first battery cell, and a second battery cell; the casing includes a first receiving portion and a second receiving portion, and a partition is disposed inside the casing; the first receiving portion and the second receiving portion are spaced apart in a first direction; the first receiving portion and the partition form a first receiving cavity for receiving the first battery cell, and the second receiving portion and the partition form a second receiving cavity for receiving the second battery cell; the first receiving portion has a first positive terminal and a first negative terminal on a side opposite to the first receiving cavity; the second receiving portion has a second positive terminal and a second negative terminal on a side opposite to the second receiving cavity. By arranging the first battery cell and the second battery cell inside the casing and respectively receiving the first battery cell and the second battery cell in the first receiving cavity and the second receiving cavity, the first battery cell and the second battery cell can independently supply power to the outside, and when one battery cell is damaged, the other battery cell can continue to supply power, thereby improving the power supply effect of the battery.

[0005] Furthermore, the first receiving portion, the second receiving portion, and the separator are integrally formed. Because the first receiving portion, the second receiving portion, and the separator are integrally formed, the manufacturing efficiency of the battery is improved.

[0006] Furthermore, the first receiving portion has a first electrical connection surface on the side facing away from the second receiving portion in the first direction, and the first positive terminal and the first negative terminal are disposed on the first electrical connection surface. The first positive terminal and the first negative terminal are disposed facing away from the second receiving portion to facilitate the first positive terminal and the first negative terminal to be electrically connected to the outside.

[0007] Furthermore, a first explosion-proof valve is provided on the first electrical connection surface, located between the first positive terminal and the first negative terminal. Under abnormal operating conditions, the battery is prone to generating gas at the location of the first positive terminal and the first negative terminal. By providing the first explosion-proof valve, the gas can be discharged, thus relieving pressure on the battery. At the same time, placing the first explosion-proof valve between the first positive terminal and the first negative terminal ensures that a short distance is maintained between the first explosion-proof valve and the first positive terminal, and between the first explosion-proof valve and the first negative terminal, improving the gas discharge efficiency.

[0008] Furthermore, the battery extends along a second direction perpendicular to the first direction; in the second direction, the first positive terminal and the first negative terminal are respectively disposed at both ends of the first electrical connection surface. By disposing the first positive terminal and the first negative terminal at both ends of the first electrical connection surface, the distance between the first explosion-proof valve and the first positive terminal, as well as the distance between the first explosion-proof valve and the first negative terminal, can be increased to a certain extent, thereby improving the safety of the battery.

[0009] Furthermore, the battery extends along a second direction perpendicular to the first direction; the second receiving portion is provided with a pair of second electrical connection surfaces disposed opposite each other in the second direction; the second positive terminal and the second negative terminal are respectively disposed on one of the pair of second electrical connection surfaces. Since the battery extends along the second direction, the second positive terminal and the second negative terminal are disposed on the second electrical connection surfaces, so that the second positive terminal and the second negative terminal are located at both ends of the battery, facilitating external electrical connection.

[0010] Furthermore, a second explosion-proof valve is provided on the second electrical connection surface. In the first direction, the second explosion-proof valve is located further away from the first receiving portion than the second positive terminal and the second negative terminal. Positioning the second explosion-proof valve away from the first receiving portion prevents the gas emitted from the second explosion-proof valve from affecting the first receiving portion and the second positive and second negative terminals, further improving battery safety.

[0011] Furthermore, the battery extends along a second direction perpendicular to the first direction; in the second direction, the first positive terminal and the second positive terminal are located near one end of the battery, and the first negative terminal and the second negative terminal are located near the other end of the battery. Terminals of the same polarity located near the same end facilitate the battery's connection to an external power source.

[0012] A second aspect of this application provides a battery pack, including a housing and the aforementioned battery, wherein the battery is installed within the housing. Because the battery of this application has better power supply performance, the power supply performance of the battery pack of this application is also improved.

[0013] A third aspect of this application provides a vehicle including the aforementioned battery pack. Because the power supply performance of the battery pack of this application is improved, the reliability and safety of the vehicle are enhanced. When one battery cell fails, the vehicle can utilize another battery cell as a power source, reducing the risk of loss of control.

[0014] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this specification. Attached Figure Description

[0015] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this specification and, together with the description, serve to explain the principles of this specification.

[0016] Figure 1 This is a structural diagram of a battery according to an exemplary embodiment of this application;

[0017] Figure 2 This is a structural diagram of a battery pack according to an exemplary embodiment of this application;

[0018] Figure 3 yes Figure 2 Structural diagram of the battery pack from the rear view;

[0019] Figure 4 yes Figure 3 A magnified view of a portion of point A in the middle.

[0020] Reference numerals: Casing - 10; First receiving part - 11; First receiving cavity - 110; First positive terminal - 111; First negative terminal - 112; First electrical connection surface - 113; First explosion-proof valve - 114; Second receiving part - 12; Second receiving cavity - 120; Second positive terminal - 121; Second negative terminal - 122; Second electrical connection surface - 123; Second explosion-proof valve - 124; Partition - 13; First battery cell - 20; Second battery cell - 30; Outer casing - 40; Base - 41; First fixing plate - 42; Second fixing plate - 43; Middle fixing plate - 44; Bar plate - 50; First bar plate - 51; Protruding end - 511; Second bar plate - 52; Third bar plate - 53; Fourth bar plate - 54; Fifth bar plate - 55; First part - 551; Second part - 552; Third part - 553; Platform part - 554. Detailed Implementation

[0021] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0022] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0023] like Figure 1 As shown, this application provides a battery 1, including a housing 10, a first battery cell 20, and a second battery cell 30. The housing 10 includes a first receiving portion 11 and a second receiving portion 12. A partition 13 is disposed inside the housing 10. The first receiving portion 11 and the second receiving portion 12 are spaced apart in a first direction X. The first direction X may be the height direction of the vehicle.

[0024] The first receiving portion 11 and the partition 13 together form a first receiving cavity 110 for receiving the first battery cell 20. The second receiving portion 12 and the partition 13 together form a second receiving cavity 120 for receiving the second battery cell 30.

[0025] The first receiving portion 11 has a first positive terminal 111 and a first negative terminal 112 disposed on the side opposite to the first receiving cavity 110. The second receiving portion 12 has a second positive terminal 121 and a second negative terminal 122 disposed on the side opposite to the second receiving cavity 120.

[0026] By setting a first battery cell 20 and a second battery cell 30 inside the housing 10, and housing the first battery cell 20 and the second battery cell 30 in the first receiving cavity 110 and the second receiving cavity 120 respectively, the first battery cell 20 and the second battery cell 30 can independently supply power to the outside. When one battery cell is damaged, the other battery cell can continue to supply power, thus improving the power supply effect of the battery.

[0027] In some embodiments, the first cell 20 and the second cell 30 may be made of different materials, allowing the battery 1 to combine the advantages of two different cell materials. Specifically, in one embodiment, the first cell 20 is made of lithium iron phosphate to ensure the battery's cycle life; the second cell 30 is made of ternary lithium to ensure the battery's energy density and low-temperature charge / discharge efficiency. In another embodiment, the first cell 20 is made of sodium ion battery to ensure the battery's cycle life; the second cell 30 is made of lithium ion battery to ensure the battery's energy density and low-temperature charge / discharge efficiency. The specific materials of the first cell 20 and the second cell 30 are not limited, and appropriate materials can be selected according to performance requirements.

[0028] Battery 1 can be connected to a corresponding control system, selecting the appropriate cell for operation based on different environments. Taking the first cell 20, which has high low-temperature charge / discharge efficiency, and the second cell 30, which has high cycle life, as an example: when in a low-temperature environment, battery 1 can be powered through the first positive terminal 111 and the first negative terminal 112. When in a normal temperature environment, battery 1 can be powered through the second positive terminal 121 and the second negative terminal 122. Therefore, both the operating efficiency and cycle life of battery 1 are achieved.

[0029] In one embodiment, the first receiving portion 11, the second receiving portion 12, and the separator 13 are integrally formed, improving the manufacturing efficiency of the battery. In other embodiments, the first receiving portion 11, the second receiving portion 12, and the separator 13 may be separate parts, connected by welding or gluing.

[0030] In one embodiment, the first receiving portion 11 has a first electrical connection surface 113 on the side facing away from the second receiving portion 12 in the first direction X. A first positive terminal 111 and a first negative terminal 112 are disposed on the first electrical connection surface 113. The first positive terminal 111 and the first negative terminal 112 are positioned away from the second receiving portion 12 to facilitate external electrical connection between them. Specifically, the first electrical connection surface 113 is the upper surface of the first receiving portion 11 in the height direction, allowing the battery connector to be installed from above the battery, resulting in higher installation efficiency.

[0031] In one embodiment, a first explosion-proof valve 114 is provided on the first electrical connection surface 113, and the first explosion-proof valve 114 is located between the first positive terminal 111 and the first negative terminal 112. Under abnormal operating conditions, the battery 1 is prone to generate gas at the location of the first positive terminal 111 and the first negative terminal 112. By providing the first explosion-proof valve 114, the gas can be discharged, and the pressure of the battery 1 can be relieved.

[0032] Meanwhile, the first explosion-proof valve 114 is positioned between the first positive terminal 111 and the first negative terminal 112. The distance between the first explosion-proof valve 114 and the first positive terminal 111, and the distance between the first explosion-proof valve 114 and the first negative terminal 112 are both relatively short, which improves the gas discharge efficiency.

[0033] Battery 1 extends along a second direction Y, which is perpendicular to the first direction X. The second direction Y is the length direction of battery 1. In one embodiment, in the second direction, a first positive terminal 111 and a first negative terminal 112 are respectively disposed at both ends of the first electrical connection surface 113.

[0034] By placing the first positive terminal 111 and the first negative terminal 112 at both ends of the first electrical connection surface 113, the distance between the first explosion-proof valve 114 and the first positive terminal 111, as well as the distance between the first explosion-proof valve 114 and the first negative terminal 112, can be increased to a certain extent, preventing the gas escaping from the explosion-proof valve from affecting the first positive terminal 111 and the first negative terminal 112, thereby improving the safety of the battery.

[0035] In one embodiment, the second receiving portion 12 is provided with a pair of second electrical connection surfaces 123 disposed opposite each other in a second direction. The second positive terminal 121 and the second negative terminal 122 are respectively disposed on one of the pair of second electrical connection surfaces 123. Since the battery 1 extends along the second direction Y, disposing the second positive terminal 121 and the second negative terminal 122 on the second electrical connection surfaces 123 allows the second positive terminal 121 and the second negative terminal 122 to be located at opposite ends of the battery 1, facilitating external electrical connection.

[0036] Specifically, when assembling multiple batteries 1, it is necessary to electrically connect the second positive terminal 121 of one battery 1 to the second negative terminal 122 of another battery 1. Since the first positive terminal 111 and the first negative terminal 112 are located at opposite ends of the battery 1, after the batteries 1 are reversed in the second direction Y, the second positive terminal 121 of one battery 1 and the second negative terminal 122 of another battery 1 are positioned close to each other, which facilitates connection and improves the installation efficiency of the batteries 1.

[0037] In one embodiment, a second explosion-proof valve 124 is provided on the second electrical connection surface 123. In a first direction, the second explosion-proof valve 124 is located further away from the first receiving portion 11 than the second positive terminal 121 and the second negative terminal 122. By positioning the second explosion-proof valve 124 away from the first receiving portion 11, the gas emitted from the second explosion-proof valve 124 is prevented from affecting the first receiving portion 11 and the second positive terminal 121 and the second negative terminal 122, thereby further improving the safety of the battery 1.

[0038] Specifically, there may be one second explosion-proof valve 124, located on the second electrical connection surface 123 where the second negative terminal 122 is located. The second explosion-proof valve 124 is located below the second negative terminal 122. In the height direction, the second explosion-proof valve 124 is also lower than the second positive terminal 121. When the second explosion-proof valve 124 is ruptured by gas, the overflowing gas will diffuse downwards and will not affect the first receiving part 11, the second positive terminal 121, and the second negative terminal 122, which are located higher.

[0039] In one embodiment, in the second direction Y, the first positive terminal 111 and the second positive terminal 121 are located near one end of the battery, and the first negative terminal 112 and the second negative terminal 122 are located near the other end of the battery. Having terminals of the same polarity close to the same end facilitates the battery's connection to an external power source.

[0040] Please refer to the following: Figure 2 As shown, a second aspect of this application provides a battery pack, including a housing 40 and the aforementioned battery 1, with the battery 1 installed inside the housing 40. Since the battery of this application has better power supply performance, the power supply performance of the battery pack of this application is also improved. Multiple batteries 1 are assembled into two rows. In each row, adjacent batteries 1 are arranged in opposite directions in the second direction Y, and adjacent batteries 1 are electrically connected via a tab 50.

[0041] The outer casing 40 includes a base 41, a first fixing plate 42, a second fixing plate 43, and a middle fixing plate 44. The first fixing plate 42 and the second fixing plate 43 fix the two ends of the arrangement of the batteries 1. The middle fixing plate 44 is disposed in the middle of the two rows of batteries 1 to fix the batteries 1.

[0042] Please refer to the following: Figure 3 and Figure 4 As shown, the barbiturate 50 includes a first barbiturate 51, a second barbiturate 52, a third barbiturate 53, a fourth barbiturate 54, and a fifth barbiturate 55.

[0043] The first tab 51 is used for electrical connection of the entire battery pack to the outside. The first tab 51 is provided with a protruding end 511 to improve the electrical connection efficiency. The second tab 52 is used to connect the second positive terminal 121 and the second negative terminal 122 of the adjacent battery 1. The third tab 53 is used to connect the first positive terminal 111 and the first negative terminal 112 of the adjacent battery 1. The fourth tab 54 and the fifth tab 55 are used to electrically connect the two rows of batteries 1.

[0044] The fifth electrode 55 includes a first part 551, a second part 552, and a third part 553. There are two first parts 551, used to connect the second positive terminal 121 and the second negative terminal 122, respectively. The second part 552 is bent from the first part 551. The second part 552 is bent upwards to form a platform portion 554. The third part 553 connects the two platform portions 554, realizing the electrical connection between the two battery banks 1.

[0045] A third aspect of this application provides a vehicle including the aforementioned battery pack. Because the power supply performance of the battery pack is improved, the reliability and safety of the vehicle are enhanced. When one battery cell fails, the vehicle can utilize another cell as a power source, reducing the risk of loss of control. The vehicle can be an electric vehicle, a hybrid vehicle, or any other type.

[0046] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A battery, characterized in that, include: The casing, the first battery cell, and the second battery cell; The housing includes a first receiving portion and a second receiving portion, and a partition is provided inside the housing; The first receiving portion and the second receiving portion are spaced apart in a first direction; The first receiving portion and the partition together form a first receiving cavity for receiving the first battery cell, and the second receiving portion and the partition together form a second receiving cavity for receiving the second battery cell; The first receiving portion has a first positive terminal and a first negative terminal on the side opposite to the first receiving cavity; the second receiving portion has a second positive terminal and a second negative terminal on the side opposite to the second receiving cavity.

2. The battery according to claim 1, characterized in that, The first receiving portion, the second receiving portion, and the partition are integrally formed.

3. The battery according to claim 1, characterized in that, The first receiving portion has a first electrical connection surface on the side opposite to the second receiving portion in the first direction, and the first positive terminal and the first negative terminal are disposed on the first electrical connection surface.

4. The battery according to claim 3, characterized in that, The first electrical connection surface is provided with a first explosion-proof valve, which is located between the first positive terminal and the first negative terminal.

5. The battery according to claim 3, characterized in that, The battery extends along a second direction perpendicular to the first direction; in the second direction, the first positive terminal and the first negative terminal are respectively disposed at both ends of the first electrical connection surface.

6. The battery according to claim 1, characterized in that, The battery extends along a second direction perpendicular to the first direction; the second receiving portion is provided with a pair of second electrical connection surfaces disposed opposite each other in the second direction; the second positive terminal and the second negative terminal are respectively disposed on one of the pair of second electrical connection surfaces.

7. The battery according to claim 6, characterized in that, The second electrical connection surface is provided with a second explosion-proof valve. In the first direction, the second explosion-proof valve is farther away from the first receiving part than the second positive terminal and the second negative terminal.

8. The battery according to claim 1, characterized in that, The battery extends along a second direction perpendicular to the first direction; in the second direction, the first positive terminal and the second positive terminal are close to one end of the battery, and the first negative terminal and the second negative terminal are close to the other end of the battery.

9. A battery pack, characterized in that, include: The housing and the battery as described in any one of claims 1-8, wherein the battery is mounted within the housing.

10. A vehicle, characterized in that, include: The battery pack as described in claim 9.

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